If a 60w incandescent bulb is replaced by a 15w fluorescent bulb, how much less electricity energy (in kilowat*hours) is consumed in a week by the fluorescent bulb, operating for 12 h each day?

Which statements about tornadoes are true? check all that apply. (a) about 12,000 tornadoes hit the united states every year. (b) a tornado looks like a funnel. (c) tornadoes are deadly atmospheric storms that cause millions in damages each year. (d) tornadoes can reach wind speeds of more than 300 miles per hour. (e) kansas is the state with the most tornadoes. (f) you will always notice a funnel before a tornado strikes.

Ln finding the density of liquid why is the method of using a density bottle more accurate than the one of using a measuring cylinder

If a substance cannot be physically separated into component parts, it is likely to be answers a mixture a pure substance an alloy a heterogeneous mixture